NewHook returns a Hook object with the provided name and params.

NewHookWithEnv returns a Hook object with the provided name, params and ExtraEnv.

NewSimpleHook returns a Hook object with just a name.

HOOK_CANNOT_GET_EXIT_STATUS is returned when after execution, we fail to get the exit code for the hook.

HOOK_DOES_NOT_EXIST is returned when the hook cannot be found.

HOOK_GENERIC_ERROR is returned for unknown errors.

HOOK_INVALID_NAME is returned if a hook has an invalid name.

HOOK_STAT_FAILED is returned when the hook exists, but stat on it fails.

HOOK_SUCCESS is returned when the hook worked.

HOOK_VTROOT_ERROR is returned if VTROOT is not set properly.

Hook is the input structure for this library.

HookResult is returned by the Execute method.

WaitFunc is a return type for the Pipe methods.